About
Callistemon sieberi DC. is an evergreen shrub that typically grows between 1 to 2 meters in height and has a spreading to semi-upright habit. Its foliage consists of small, narrow, and stiff dark green leaves, each ending in a sharp point. During late spring and summer, this plant produces creamy-yellow flowers that form elongated spikes, reaching lengths of up to 15 centimeters.
About the genus
Callistemon consists of evergreen shrubs characterized by their fragrant, narrow to lanceolate leaves. These plants produce distinctive bottlebrush-like flower spikes, where the elongated, vividly colored stamens are particularly noticeable.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Loam, Sand
- Soil pH
- Acid, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Evergreen
- Height
- 1-1.5 metres
- Spread
- 1-1.5 metres
- Time to full height
- 5-10 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Mediterranean climate plants
- Native to
- Australia
Care notes
- Cultivation
- Grow in full sun in moderately fertile, moist but well-drained, neutral or acidic soil
- Pruning
- Pruning group 8; will tolerate hard pruning
- Propagation
- Propagate by seed, sown onto moist compost at 16-18C, in spring, or by heeled, semi-ripe cuttings of lateral shoots in late summer
- Pest resistance
- May be susceptible to scale insect, mealy bug and glasshouse red spider mite
- Disease resistance
- May be susceptible to honey fungus